It wasn't Mohammed who founded Islam.

[Minimalist]

Guys, I hate to piss on Rayaan's parade all the time but this Sebeos stuff has a shaky history. It was not published until 1851 in Istanbul of all places and, even the Encyclopedia Iranica notes

http://www.iranicaonline.org/articles/sebeos

The history attributed to Sebeos has survived in a single late manuscript, Matenadaran 2639 (dated 1672). It was the last in a series of texts, constituting a virtual canon of historical writing, brought together in this famous manuscript. A second, older manuscript (dated 1568) was known and used for the first edition published in 1851, but it has since been lost. The editor, T‘adēos Mihrdatean, was responsible for its widely accepted identification with a history of Heraclius written by Sebeos, a text cited in lists of anterior works given by Step‘anos Taronets‘i (early eleventh century) and a number of other, later Armenian historians. It is striking, however, that the early tenth-century historian, T‘ovma Artsruni, who quotes extensively from the text, makes no reference to Sebeos or to a history of Heraclius.

Bart Ehrman has shown what happens to copies of copies of copies of text down through the years.